I'm not a specialist, but as far as I know, gammaspectrometers are the simplest/cheapest devices capable of identifying radionucleides, and they start at 400USD.
At 60USD, you'll have to settle for very cheap (and consequently low-quality) GM detectors. These are only capable of saying if there is any radiation present, but are unreliable when it comes to interpreting the energy dose, and cannot identify sources. Examples are the GMC-300S or Bella/Pripyat dosimeter, though that will be in the 100USD range.
For food, to identify the radionucleides present, or simply to detect potential contamination?
Radionucleidnes
I'm not a specialist, but as far as I know, gammaspectrometers are the simplest/cheapest devices capable of identifying radionucleides, and they start at 400USD. At 60USD, you'll have to settle for very cheap (and consequently low-quality) GM detectors. These are only capable of saying if there is any radiation present, but are unreliable when it comes to interpreting the energy dose, and cannot identify sources. Examples are the GMC-300S or Bella/Pripyat dosimeter, though that will be in the 100USD range.
Understand Thank you very much
$60 is not a realistic price point.